It occurs naturally in inorganic and organic forms, such as arsenic acid (H3AsO4) and
arsenous acid (H3AsO3) and their dissociation derivatives (H2AsO4 -, HAsO4 2-, H2AsO3 - and HAsO3 2-)arsenites, arsenates, monomethylarsenic acid (MMAA), and dimethylarsenic acid (DMAA) [2].
Misra, "The silver ion catalyses oxidation of
arsenous acid by [S.sub.2][O.sup.2-.sub.8]," Bulletin of the Chemical Society of Japan, vol.
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arsenous agapanthus bylina (a Russian traditional heroic poem) buffoonery
Qualitatively, arsenic may be detected by precipitation as the yellow
arsenous sulfide from hydrochloric acid of 25% or greater concentration.
Between then and 1955, arsenic (as the sodium salt of
arsenous acid) was widely used on the NSW north coast and along the NSW--Queensland border.
For example,
arsenous sulfide can be produced by either of the following reactions:
Four-week-old [apoE.sup.-/-] or DKO mice were maintained for 13 wk on tap water or on tap water containing 200 ppb m-sodium arsenite (0.35 mg/L NaAs[O.sub.2]; Sigma-Aldrich), disodium methyl arsonate hexahydrate DSMA (MMA V; 0.78 mg/L; Chem Service), monomethyl
arsenous acid (MMA III; 0.37 mg/L) synthesized as described (Gu 2014) or cacodylic acid (DMA V; 0.43 mg/L; Sigma-Aldrich).
Arsenic acid,
arsenous acid, monomethylarsonic acid (MMA), and DMA are metabolites of inorganic arsenic.